| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 09/02/1987 | EP0234435A2 Low-frequency power amplifier, in particular of the integrated type |
| 09/02/1987 | EP0234107A2 Field-effect transistor circuits |
| 09/01/1987 | US4691174 Fast recovery amplifier |
| 09/01/1987 | US4691173 RF input drive saturation control loop |
| 08/27/1987 | WO1987005171A1 Method for the compensation of the offset voltage of a regulating amplifier and circuit arrangement for implementing such method |
| 08/26/1987 | EP0233443A1 Circuit arrangement for evaluating AC signals obtained from the secondary side of a transformer |
| 08/26/1987 | CN86103407A Low noise waveguide-type fet amplifier |
| 08/25/1987 | US4689819 Class D hearing aid amplifier |
| 08/25/1987 | US4689631 Space amplifier |
| 08/25/1987 | US4689578 Hydrophone pre-amplifier with self-calibration |
| 08/25/1987 | US4689498 Signal input circuit with constant operating power |
| 08/19/1987 | EP0232847A2 Integrated low input current JFET amplifier |
| 08/19/1987 | CN87100566A Electrical circuit for using with four-pole device |
| 08/18/1987 | USRE32479 Feedback amplifier or threshold value switch for a current feed differential stage |
| 08/18/1987 | US4688001 High Efficiency, low distortion amplifier |
| 08/18/1987 | US4688000 Non biased push-pull amplifiers |
| 08/18/1987 | US4687984 JFET active load input stage |
| 08/13/1987 | WO1987004876A1 Balanced differential load |
| 08/11/1987 | US4686487 Current mirror amplifier |
| 08/11/1987 | US4686458 Pulse alignment system |
| 08/11/1987 | US4686387 Biasing circuit for a field effect transistor |
| 08/06/1987 | DE3602908A1 Amplifier circuit for amplifying an alternating voltage |
| 08/05/1987 | EP0230693A1 High-frequency differential amplifier stage and amplifier with such a differential amplifier stage |
| 08/04/1987 | US4685048 AC-DC transformation circuit |
| 07/29/1987 | EP0230176A1 Static relay and its use in a bipolar inverter or in a bi-directional current circuit |
| 07/28/1987 | US4683591 Proportional power demand audio amplifier control |
| 07/28/1987 | US4683440 High-frequency amplifier device |
| 07/28/1987 | US4683439 Digitally driven switching power amplifier system |
| 07/21/1987 | US4682369 Ripple and droop reduction circuit |
| 07/21/1987 | US4682120 Short circuit protection device for an integrated circuit and a load connected thereto |
| 07/21/1987 | US4682098 Voltage-current converter |
| 07/21/1987 | US4682059 Comparator input stage for interface with signal current |
| 07/21/1987 | US4682022 Detector preamplifier for use with a MCT detector |
| 07/21/1987 | CA1224545A1 Integrated circuits |
| 07/21/1987 | CA1224544A1 Amplifier arrangement |
| 07/21/1987 | CA1224543A1 Constant-current source circuit and differential amplifier using the same |
| 07/15/1987 | EP0228843A2 Field-effect transistor amplifier |
| 07/14/1987 | US4680553 Intermediate frequency amplifier with signal strength detection circuit |
| 07/14/1987 | US4680483 Comparator circuit |
| 07/14/1987 | US4679568 Physiological potential preamplifier |
| 07/08/1987 | EP0228265A2 Microwave power amplifier |
| 07/08/1987 | EP0228216A2 Differential amplifier |
| 07/08/1987 | EP0228215A2 Field-effect transistor amplifier circuits |
| 07/07/1987 | US4679251 Optical receiver |
| 07/07/1987 | US4679092 Reduced distortion display circuit |
| 07/07/1987 | US4679002 Electromagnetically shielded narrow band electroencephalographic amplifier |
| 07/07/1987 | CA1223938A1 Light detecting circuit |
| 07/07/1987 | CA1223927A1 Darlington transistor arrangement |
| 07/02/1987 | WO1987004026A1 Gate modulated transimpedance amplifier with buffering for focal plane array |
| 07/02/1987 | DE3545772A1 Circuit arrangement of a switching stage amplifier |
| 07/01/1987 | EP0227463A2 Secondary emission cathode and tube |
| 07/01/1987 | EP0227411A1 Inductive circuit arrangements |
| 07/01/1987 | EP0227323A2 Wideband feedback amplifier |
| 07/01/1987 | EP0226853A2 Optical receiver |
| 07/01/1987 | EP0226614A1 Pulse alignment system |
| 06/30/1987 | US4677393 Phase-corrected waveguide power combiner/splitter and power amplifier |
| 06/30/1987 | US4677391 Series biasing scheme for field effect transistors |
| 06/30/1987 | US4677342 Semiconductor secondary emission cathode and tube |
| 06/24/1987 | EP0226006A1 Switching amplifier for analogous low-frequency signals |
| 06/24/1987 | EP0225924A1 Electronic memory element with a lambda transistor. |
| 06/24/1987 | EP0225902A1 Improvements in or relating to transconductors |
| 06/23/1987 | US4675911 Monolithic microwave integrated circuit broadband mixer |
| 06/23/1987 | US4675594 Voltage-to-current converter |
| 06/23/1987 | US4675592 Voltage output circuit |
| 06/23/1987 | US4674830 Fiber optic amplifier |
| 06/19/1987 | DE3543677A1 Pre-amplifier with high dynamic range and sensitivity |
| 06/17/1987 | CN86108247A 光接收器 Optical receiver |
| 06/16/1987 | US4674119 Wide-band high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry |
| 06/16/1987 | US4673889 Apparatus and method for muting an output signal in a switching amplifier |
| 06/16/1987 | US4673887 Digital driver for fixed power amplifier |
| 06/16/1987 | US4673886 Adaptively stabilized RF amplifier |
| 06/16/1987 | EP0225431A2 Buffered miller current compensating circuit |
| 06/16/1987 | CA1223051A1 Quadrupole for resistive matching of a reactance of the rlc type |
| 06/16/1987 | CA1223049A1 Microwave power distributing and synthesizing device and microwave power amplifying apparatus including the same |
| 06/10/1987 | CN86107133A Multi-level power amplifying circuitry for portable radio transceivers |
| 06/09/1987 | US4672328 Waveguide-mounted amplifier |
| 06/09/1987 | US4672327 Self-biasing for enhancement-mode field effect transistors |
| 06/09/1987 | US4672326 Limited output operational amplifier |
| 06/09/1987 | US4672235 Bipolar power transistor |
| 06/03/1987 | EP0223854A1 Rf input drive saturation control loop. |
| 06/02/1987 | US4670720 Switching device for suppressing a signal |
| 06/02/1987 | US4670692 High-speed power amplifier for driving inductive loads |
| 05/27/1987 | EP0223259A1 Current output circuit |
| 05/27/1987 | EP0222927A1 High-frequency amplifier |
| 05/27/1987 | CN86101711A Image displaying device |
| 05/26/1987 | US4668971 CCD imager with JFET peripherals |
| 05/26/1987 | US4668921 Power supply circuit |
| 05/26/1987 | US4668919 High speed operational amplifier |
| 05/26/1987 | US4668907 Monolithically integratable current adding circuit |
| 05/20/1987 | EP0222396A1 Field-effect transistor device |
| 05/20/1987 | EP0222338A2 Semiconductor photo-sensing device |
| 05/19/1987 | US4667342 Tunable receiver input circuit |
| 05/19/1987 | US4667166 Differential amplifier system |
| 05/19/1987 | US4667165 High-speed full differential amplifier with common mode rejection |
| 05/19/1987 | US4667164 Frequency response amplifier |
| 05/19/1987 | US4667146 Voltage-controlled push-pull current source |
| 05/19/1987 | US4667144 High frequency, high voltage MOSFET isolation amplifier |
| 05/19/1987 | CA1222027A1 Phase-locked magnetron system |
| 05/13/1987 | EP0221632A1 Multifunction floating fet circuit |
| 05/12/1987 | CA1221748A1 Microwave preamplifier |